7 Sizes Belleville Compression Spring Disc Washer Gasket Disc Spring Features: 1. Heavy load, short stroke, small space required, easy e in combination. 2. Easy to repair and replace, high economic security, suitable for precision heavy machinery with small space and large load. 3. Disc spring has a larger deformation energy per unit volume than other types of springs. Has good buffer shock absorption capacity. 4. With variable stiffness characteristics. 5. Often used as a strong buffer and shock absorber in heavy machinery, it is also a compacting device for clutches, safety valves, pressure reducing valves, etc. Specification: Item Type: Disc Spring Material: Steel Color: As Pictures Show Size(cm/inch) Quantity 8 * 4.2 * 0.4 / 3.1 * 1.7 * 0.16 20Pcs 10 * 5.2 * 0.5 / 3.9 * 2.0 * 0.2 20Pcs 12.5 * 6.2 * 0.7 / 4.9 * 2.4 * 0.28 20Pcs 14 * 7.2 * 0.8 / 5.5 * 2.8 * 0.31 20Pcs 16 * 8.2 * 0.9 / 6.3 * 3.2 * 0.35 20Pcs 18 * 9.2 * 1.0 / 7.1 * 3.6 * 0.39 20Pcs 20 * 10.2 * 1.1 / 7.9 * 4.0 * 0.43 20Pcs Package Size: 13 * 6.5 * 2cm / 5.1 * 2.6 * 0.8inch Package Weight: Approx. 143g Package List: 1 * Box of Disc Spring